There have been some good discussions on CF Radio after the Boyle/Cook criticisms of Crossfit on training for the military and reducing injury rates. There was a training officer who said that after implementing CF methodology he saw a dramatic decrease in the number of injuries. There was also a rebuttal about the benefits of high-rep Oly lifting, arguing that many people have to do technically difficult things when they're tired.

I don't know if I personally advocate it, but Grace is an a**kicker of a workout.